CN107020426B - The molding device of Dagger pistol barrel block rifling wire squeeze and process - Google Patents
The molding device of Dagger pistol barrel block rifling wire squeeze and process Download PDFInfo
- Publication number
- CN107020426B CN107020426B CN201710235183.9A CN201710235183A CN107020426B CN 107020426 B CN107020426 B CN 107020426B CN 201710235183 A CN201710235183 A CN 201710235183A CN 107020426 B CN107020426 B CN 107020426B
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- China
- Prior art keywords
- wire squeeze
- barrel block
- squeeze
- rifling
- wire
- Prior art date
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- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H3/00—Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H3/00—Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
- B23H3/04—Electrodes specially adapted therefor or their manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H2400/00—Moving mechanisms for tool electrodes
- B23H2400/10—Moving mechanisms for tool electrodes for rotating the electrode
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Of Electrical Connectors (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The molding device of Dagger pistol barrel block rifling wire squeeze, it is rushed including wire squeeze bindiny mechanism, positioning and clamping mechanism and wire squeeze, one end of the wire squeeze bindiny mechanism is fixedly connected with wire squeeze equipment, is moved forward and backward with wire squeeze equipment, and the other end of wire squeeze bindiny mechanism protrudes into positioning and clamping mechanism；The positioning and clamping mechanism is set to one end of wire squeeze bindiny mechanism, for clamping and positioning barrel block, and forms to the wire squeeze of wire squeeze bindiny mechanism and provides guiding, the axial line of the barrel block is eccentric in the axial line of positioning and clamping mechanism；The wire squeeze punching is connected to wire squeeze bindiny mechanism and protrudes into one end in positioning and clamping mechanism, for squeezing barrel block inner hole, protrudes into or exits barrel block with moving forward and backward for wire squeeze bindiny mechanism, form rifling.Present invention reduces the tooling manufacturing cycles, reduce tooling manufacturing cost, and rifling is full after extrusion forming in hole, and contour line is clear, rifling caliber is stable, and consistency is good, and technique process is pollution-free, are good for the environment.
Description
Technical field
The present invention relates to gun barrel bore technical fields, and in particular to a kind of molding device of Dagger pistol barrel block rifling wire squeeze
And process.
Background technique
Dagger pistol is to integrate dagger and pistol, and several bores and an emission system, an ancient type of spoon are provided in dagger handle
First rifle singlehanded can not only use, but also can change thorax and continuously emit, while have the function of dagger and pistol concurrently, be my army scout and public security
The weapon of new generation that special policeman is equipped with can ensure that special technical soldier and individual augmentee execute prisoner of war's task, or can not capture the case where
Enemy is shot dead rapidly down.In addition to having the function of pistol and dagger, also has file concurrently, cut, cut, is bottle cap opened, the first-class function of can opening, mention
High field operation viability, has many advantages, such as that far firing range, projectile lethal power is big, precision is high, failure rate is low, shooting error is good.
Rifling is the soul of gun barrel, and the practice is to assign the ability of bullet rotation, makes bullet after thorax out, remain to protect
Hold set direction, recessed part is known as negative line in gun barrel, and raised part is known as land, and the rifling in gun barrel can make son
Rotation is generated when bullet emits, and improves the stability and range of bullet.
Dagger pistol barrel block rifle molding in the prior art uses always electrolysis process, which is primarily present following
Problem:
A, the frock cost that electrolysis uses is high, and casting need to be opened by being electrolysed plug used；
B, the length for being electrolysed plug is greater than 100mm, and processing dimension is unstable, be easy to cause mandrel bend；
C, rifle uses Electrolyzed Processing, and yin, yang line is restricted by electrolysis installation electric current, solution etc., the rifle size after processing
It is unstable.
D, electrolysis process has pollution, is unfavorable for environmental protection.
Summary of the invention
The purpose of the present invention is being processed for Dagger pistol barrel block rifle in the prior art using electrolysis process, cause
Rifle processing dimension is unstable, is electrolysed the high problem of frock cost used, provides a kind of Dagger pistol barrel block rifling wire squeeze molding
Device and process by changing barrel block rifling processing unit (plant) and processing method utilize wire squeeze molding machine and method
Barrel block rifling is processed, is rushed with wire squeeze and replaces electrolysis plug, saved the tooling manufacturing cycle, reduced production cost,
Rifling line style after extruding is full, contour line is clear, can be applied to the porous rifling molding of Same Part.
To achieve the above object, the technical solution adopted in the present invention is as follows:
The molding device of Dagger pistol barrel block rifling wire squeeze, including wire squeeze bindiny mechanism, positioning and clamping mechanism and wire squeeze punching,
One end of the wire squeeze bindiny mechanism is fixedly connected with wire squeeze equipment, is moved forward and backward with wire squeeze equipment, wire squeeze bindiny mechanism it is another
One end is protruded into positioning and clamping mechanism；The positioning and clamping mechanism is set to one end of wire squeeze bindiny mechanism, for clamping and determining
Position barrel block, and the wire squeeze of wire squeeze bindiny mechanism is formed, guiding is provided, the axial line of the barrel block is eccentric in positioning and clamps
The axial line of mechanism；The wire squeeze punching is connected to wire squeeze bindiny mechanism and protrudes into one end in positioning and clamping mechanism, is used for extruder
Tube socket inner hole protrudes into or exits barrel block with moving forward and backward for wire squeeze bindiny mechanism, forms rifling.
Preferably, the wire squeeze bindiny mechanism includes the clamp column being fixedly connected with wire squeeze equipment, is connected in clamp column
Wire squeeze mandril, one end of the wire squeeze mandril is connected in clamp column by clamp, and the other end protrudes into positioning and clamping mechanism.
Clamp column is connect with wire squeeze mandril using dismountable clamp, convenient in the case where wire squeeze mandril bending deformation quickly more
It changes.
Preferably, it is also socketed with guard ring and support column on the wire squeeze mandril, for protecting and supporting wire squeeze mandril.Using
Guard ring can effectively prevent mandril and be bent, fracture in process.
Preferably, the positioning and clamping mechanism includes the left bushing that wire squeeze tool mechanism one end is arranged in, is mounted on wire squeeze
Right bushing in equipment and the positioning pin being arranged in left bushing, the center of the left bushing is axially disposed to be had and makes wire squeeze mandril
The through-hole punched through with wire squeeze has been arranged in an axially parallel mode dowel hole in a lateral edge of the through-hole, and it is fixed that the positioning pin is placed in this
In the pin hole of position；The notch for placing barrel block is provided on the adjacent end face of the left and right bushing, barrel block is placed in the notch
And it is clamped by left and right bushing and positioning pin positioning.Barrel block is fixed by left and right bushing, prevents barrel block from adding
It is loosened during work, the setting of bushing centre bore correctly can guide wire squeeze to rush in into inner hole；Positioning pin can position barrel block direction,
Guarantee that wire squeeze punching can smoothly enter into processed hole.
Preferably, the guard ring is provided with multiple, increases or decreases quantity according to the length of wire squeeze mandril.
Preferably, the support column is socketed at the maximum position of wire squeeze mandril stress.Wire squeeze mandril is protected, prevents from processing
It is broken off in the process.
Preferably, the positioning pin includes the first positioning pin and the second positioning pin, before the non-wire squeeze of barrel block, uses the
One positioning pin positions barrel block；After wire squeeze is completed in one of hole of barrel block, the first positioning pin is changed to second and is determined
Position pin positions barrel block.Before wire squeeze and two positioning pins are respectively set after wire squeeze, it is ensured that rifling adds in gun barrel bore
Reliable, size zero deflection is positioned during work.
The molding process of Dagger pistol barrel block rifling wire squeeze, utilizes foregoing Dagger pistol barrel block rifling wire squeeze
Molding machine according to the following steps forms barrel block wire squeeze:
Step 1, acquisition meet the barrel block of design size requirement, check the verticality of barrel block both ends of the surface and outer circle；
Wire squeeze punching is put into left bushing centre bore and is connected on wire squeeze mandril, while the first positioning pin being put by step 2
In the dowel hole for entering left bushing, the other end of the first positioning pin protrudes into any one unthreaded hole on barrel block, and barrel block is put
In the notch for entering left and right bushing；
Step 3, starting wire squeeze equipment clamping switch, left and right bushing compress barrel block；
Step 4, starting wire squeeze equipment rotary switch, wire squeeze equipment drive wire squeeze mandril and wire squeeze are punched in the guidance of left bushing
Lower to move to barrel block direction, wire squeeze punching is protruded into barrel block unthreaded hole, is squeezed unthreaded hole, is rotated according to lead, completes hole
Interior rifling wire squeeze molding；
Step 5, after first hole wire squeeze, unclamp clamping switch and remove barrel block, take out wire squeeze punching, remove first
Positioning pin changes the second positioning pin, and wire squeeze punching is put into left bushing centre bore, will complete rifling wire squeeze molding hole alignment the
Two positioning pins, and barrel block is put into the notch of left and right bushing；
Step 6, the movement for repeating step 3 and step 4, rotate according to lead, complete rifling wire squeeze in second hole and form；
Step 7, release clamping switch remove barrel block, rotate by a certain angle, repeat the process of step 3 and step 4, complete
Rifling wire squeeze forms in other holes.
Beneficial effects of the present invention:
1, it by changing the processing unit (plant) and processing method of barrel block rifling, is rushed with wire squeeze and replaces electrolysis plug, shortened
The tooling manufacturing cycle reduces tooling manufacturing cost；
2, positioning and clamping mechanism is convenient for mounting and clamping, can correctly guide wire squeeze to rush in into barrel block inner hole；
3, wire squeeze punching, which is freely felt relieved, enters barrel block inner hole, and rifling is full after extruding, and contour line is clear, rifling caliber is steady
Fixed, consistency is good；
4, extrusion forming process is rushed using wire squeeze, it is pollution-free, it is good for the environment.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of barrel block；
Fig. 3 is the A direction view of Fig. 2.
Appended drawing reference
1, wire squeeze bindiny mechanism；2, positioning and clamping mechanism；3, wire squeeze is rushed；4, barrel block；
11, clamp column；12, wire squeeze mandril；13, guard ring；14, support column；
15, clamp；
21, left bushing；22, right bushing；23, the first positioning pin；
24, the second positioning pin；
Specific embodiment
Below with reference to embodiment and attached drawing, invention is further described in detail.
As shown in Figure 1 to Figure 3, the molding device of Dagger pistol barrel block rifling wire squeeze, including wire squeeze bindiny mechanism 1, positioning
Clamp system 2 and wire squeeze punching 3, one end of the wire squeeze bindiny mechanism 1 is fixedly connected with wire squeeze equipment, with fortune before and after wire squeeze equipment
Dynamic, the other end of wire squeeze bindiny mechanism 1 protrudes into positioning and clamping mechanism 2；Positioning and clamping mechanism 2 is set to wire squeeze bindiny mechanism 1
One end, for clamping and positioning barrel block 4, and the wire squeeze of wire squeeze bindiny mechanism 1 is formed, guiding, the barrel block 4 is provided
Axial line be eccentric in the axial line of positioning and clamping mechanism 2；Wire squeeze punching 3 is connected to wire squeeze bindiny mechanism 1 and protrudes into positioning clamping machine
Barrel block 4, shape are protruded into or exited in one end in structure 2 with moving forward and backward for wire squeeze bindiny mechanism 1 for squeezing barrel block inner hole
At rifling.
Wire squeeze bindiny mechanism 1 includes the clamp column 11 being fixedly connected with wire squeeze equipment, the wire squeeze being connected in clamp column 11
One end of mandril 12, wire squeeze mandril 12 is connected in clamp column 11 by clamp 15, and the other end protrudes into positioning and clamping mechanism 2,
Clamp column 11 is threadedly fixedly connected with wire squeeze equipment, convenient for adjusting processing effective travel；On wire squeeze mandril 12 also
It is socketed with guard ring 13 and support column 14, according to the length of wire squeeze mandril 12, settable multiple guard rings 13 can also be according to practical need
The quantity of guard ring is increased or decreased, support column 14 is mounted at the maximum position of 12 stress of wire squeeze mandril, prevents mandril from adding
It is bent, fractures during work.
Positioning and clamping mechanism 2 includes the left bushing 21 that 1 one end of wire squeeze bindiny mechanism is arranged in, is mounted on the work of wire squeeze equipment
Right bushing 22 on platform and the positioning pin being arranged in left bushing 21, the center of left bushing 21 is axially disposed to be had and makes wire squeeze mandril
12 and 3 through-holes that pass through of wire squeeze punching, it is arranged in an axially parallel mode dowel hole in a lateral edge of the through-hole, positioning pin is placed in the positioning
In pin hole, in the present embodiment, positioning pin uses two, including the first positioning pin 23 and the second positioning pin 24, before wire squeeze
The size of gun barrel bore is less than normal compared to the bore size after wire squeeze, therefore, before the non-wire squeeze of barrel block 4, uses the first positioning pin
23 pairs of barrel blocks 4 position, and after wire squeeze is completed in one of hole of barrel block 4, the first positioning pin 23 is changed to the second positioning
Pin 24 positions barrel block 4, it is ensured that positions reliable, size zero deflection in gun barrel bore in rifling process.In order to right
Barrel block 4 is reliably fixed, and prevents barrel block 4 from loosening in process, at the adjacent end of the left and right bushing 21,22
The notch for placing barrel block 4 is provided on face, barrel block 4 is placed in the notch and by left and right bushing 21,22 and positioning pin
Positioning clamps, and the setting of left and right bushing centre bore can correctly guide wire squeeze to rush in into inner hole, positioning pin energy reliable location barrel block
Direction guarantees that wire squeeze punching can smoothly enter into processed hole.
The present invention also provides the molding processes of Dagger pistol barrel block rifling wire squeeze, utilize Dagger pistol gun barrel above-mentioned
Seat rifling wire squeeze molding machine, according to the following steps forms barrel block wire squeeze:
Step 1, acquisition meet the barrel block of design size requirement, check the verticality of barrel block both ends of the surface and outer circle；
Wire squeeze punching is put into left bushing centre bore and is connected on wire squeeze mandril, while the first positioning pin being put by step 2
In the dowel hole for entering left bushing, the other end of the first positioning pin protrudes into any one unthreaded hole on barrel block, and barrel block is put
In the notch for entering left and right bushing；
Step 3, starting wire squeeze equipment clamping switch, left and right bushing compress barrel block；
Step 4, starting wire squeeze equipment rotary switch, wire squeeze equipment drive wire squeeze mandril and wire squeeze are punched in the guidance of left bushing
Lower to move to barrel block direction, wire squeeze punching is protruded into barrel block unthreaded hole, is squeezed unthreaded hole, is rotated according to lead, completes hole
Interior rifling wire squeeze molding；
Step 5, after first hole wire squeeze, unclamp clamping switch and remove barrel block, take out wire squeeze punching, remove first
Positioning pin changes the second positioning pin, and wire squeeze punching is put into left bushing centre bore, will complete rifling wire squeeze molding hole alignment the
Two positioning pins, and barrel block is put into the notch of left and right bushing；
Step 6, the movement for repeating step 3 and step 4, rotate according to lead, complete rifling wire squeeze in second hole and form；
Step 7, release clamping switch remove barrel block, rotate by a certain angle, repeat the process of step 3 and step 4, complete
Rifling wire squeeze forms in other holes.
As shown in figure 3, in the present embodiment, Dagger pistol barrel block completes four by above-mentioned process for four holes one by one
Hole rifling extrusion forming, certainly, processing unit (plant) of the invention and processing method are not limited to the part that processing is only four holes,
It can be applied to the porous rifle molding of Same Part.
Present invention reduces the tooling manufacturing cycles, reduce tooling manufacturing cost, and rifling is full after extrusion forming in hole, wheel
Profile is clear, rifling caliber is stable, and consistency is good, and technique process is pollution-free, is good for the environment.
Claims (8)
1. the molding device of Dagger pistol barrel block rifling wire squeeze, it is characterised in that: including wire squeeze bindiny mechanism, positioning and clamping mechanism
It is rushed with wire squeeze, one end of the wire squeeze bindiny mechanism is fixedly connected with wire squeeze equipment, moves forward and backward with wire squeeze equipment, wire squeeze connection
The other end of mechanism protrudes into positioning and clamping mechanism；The positioning and clamping mechanism is set to one end of wire squeeze bindiny mechanism, is used for
Barrel block is clamped and positioned, and the wire squeeze of wire squeeze bindiny mechanism is formed, guiding is provided, the axial line of the barrel block is eccentric in
The axial line of positioning and clamping mechanism；The wire squeeze punching is connected to wire squeeze bindiny mechanism and protrudes into one end in positioning and clamping mechanism, uses
In squeezing barrel block inner hole, barrel block is protruded into or exited with moving forward and backward for wire squeeze bindiny mechanism, forms rifling.
2. the molding device of Dagger pistol barrel block rifling wire squeeze according to claim 1, it is characterised in that: the wire squeeze connects
Connection mechanism includes the clamp column being fixedly connected with wire squeeze equipment, the wire squeeze mandril being connected in clamp column, the wire squeeze mandril
One end is connected in clamp column by clamp, and the other end protrudes into positioning and clamping mechanism.
3. the molding device of Dagger pistol barrel block rifling wire squeeze according to claim 2, it is characterised in that: the wire squeeze top
Guard ring and support column are also socketed on bar, for protecting and supporting wire squeeze mandril.
4. the molding device of Dagger pistol barrel block rifling wire squeeze according to claim 3, it is characterised in that: the locating clip
Tight mechanism includes the left bushing that wire squeeze bindiny mechanism one end is arranged in, the right bushing being mounted in wire squeeze equipment and is arranged in left lining
Positioning pin in set, the center of the left bushing is axially disposed the through-hole for punching through wire squeeze mandril and wire squeeze, logical at this
One lateral edge in hole has been arranged in an axially parallel mode dowel hole, and the positioning pin is placed in the dowel hole；The left and right bushing is adjacent
End face on be provided with the notch for placing barrel block, barrel block is placed in the notch and fixed by left and right bushing and positioning pin
Position clamps.
5. the molding device of Dagger pistol barrel block rifling wire squeeze according to claim 3, it is characterised in that: the guard ring is set
It is equipped with multiple, quantity is increased or decreased according to the length of wire squeeze mandril.
6. the molding device of Dagger pistol barrel block rifling wire squeeze according to claim 3, it is characterised in that: the support column
It is socketed at the maximum position of wire squeeze mandril stress.
7. the molding device of Dagger pistol barrel block rifling wire squeeze according to claim 4, it is characterised in that: the positioning
Pin includes the first positioning pin and the second positioning pin, before the non-wire squeeze of barrel block, is positioned using the first positioning pin to barrel block；Work as rifle
After wire squeeze is completed in one of hole of tube socket, the first positioning pin is changed to the second positioning pin, barrel block is positioned.
8. the molding process of Dagger pistol barrel block rifling wire squeeze, it is characterised in that: utilize dagger as claimed in claim 7
Rifle barrel block rifling wire squeeze molding machine according to the following steps forms barrel block wire squeeze:
Step 1, acquisition meet the barrel block of design size requirement, check the verticality of barrel block both ends of the surface and outer circle；
Wire squeeze punching is put into left bushing centre bore and is connected on wire squeeze mandril, while the first positioning pin is put into a left side by step 2
In the dowel hole of bushing, the other end of the first positioning pin protrudes into any one unthreaded hole on barrel block, and by barrel block be put into it is left,
In the notch of right bushing；
Step 3, starting wire squeeze equipment clamping switch, left and right bushing compress barrel block；
Step 4, starting wire squeeze equipment rotary switch, wire squeeze equipment drive wire squeeze mandril and wire squeeze be punched under the guidance of left bushing to
The movement of barrel block direction, wire squeeze punching are protruded into barrel block unthreaded hole, squeeze unthreaded hole, rotated according to lead, and thorax in hole is completed
The molding of line wire squeeze；
Step 5, after first hole wire squeeze, unclamp clamping switch and remove barrel block, take out wire squeeze punching, remove the first positioning
Pin, changes the second positioning pin, and the wire squeeze punching removed is reentered into left bushing centre bore, the molding hole of rifling wire squeeze will be completed
It is directed at the second positioning pin, and barrel block is put into the notch of left and right bushing；
Step 6, the movement for repeating step 3 and step 4, rotate according to lead, complete rifling wire squeeze in second hole and form；
Step 7, release clamping switch remove barrel block, rotate by a certain angle, repeat the process of step 3 and step 4, complete other
Rifling wire squeeze forms in hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710235183.9A CN107020426B (en) | 2017-04-12 | 2017-04-12 | The molding device of Dagger pistol barrel block rifling wire squeeze and process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710235183.9A CN107020426B (en) | 2017-04-12 | 2017-04-12 | The molding device of Dagger pistol barrel block rifling wire squeeze and process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107020426A CN107020426A (en) | 2017-08-08 |
| CN107020426B true CN107020426B (en) | 2019-02-01 |
Family
ID=59526509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710235183.9A Expired - Fee Related CN107020426B (en) | 2017-04-12 | 2017-04-12 | The molding device of Dagger pistol barrel block rifling wire squeeze and process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107020426B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1707215A (en) * | 2004-11-02 | 2005-12-14 | 张鸣 | High strong compound rifling technique plan of inlay processing method |
| CN203170748U (en) * | 2013-03-25 | 2013-09-04 | 重庆建设工业(集团)有限责任公司 | Device for processing longitudinal groove of gun barrel chamber |
| CN203470616U (en) * | 2013-09-27 | 2014-03-12 | 四川宁江精密工业有限责任公司 | Guiding device used for punching central moment holes |
| CN204770315U (en) * | 2015-07-23 | 2015-11-18 | 无锡职业技术学院 | Rifling pushes up towards device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3538568A (en) * | 1968-04-25 | 1970-11-10 | Us Army | Apparatus for rifling gun barrel tubes by extrusion |
| US7202418B2 (en) * | 2004-01-07 | 2007-04-10 | Cable Components Group, Llc | Flame retardant and smoke suppressant composite high performance support-separators and conduit tubes |
-
2017
- 2017-04-12 CN CN201710235183.9A patent/CN107020426B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1707215A (en) * | 2004-11-02 | 2005-12-14 | 张鸣 | High strong compound rifling technique plan of inlay processing method |
| CN203170748U (en) * | 2013-03-25 | 2013-09-04 | 重庆建设工业(集团)有限责任公司 | Device for processing longitudinal groove of gun barrel chamber |
| CN203470616U (en) * | 2013-09-27 | 2014-03-12 | 四川宁江精密工业有限责任公司 | Guiding device used for punching central moment holes |
| CN204770315U (en) * | 2015-07-23 | 2015-11-18 | 无锡职业技术学院 | Rifling pushes up towards device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107020426A (en) | 2017-08-08 |
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Granted publication date: 20190201 Termination date: 20210412 |